Home 9 Product 9 CHCO‚ Natural Gas & Carbon Monoxide Detector

CHCO‚ Natural Gas & Carbon Monoxide Detector

The CHCO is a dual sensor, gas and carbon monoxide detector.

Quantity discount

Quantity 1-4 5-9 10-14 15+
Price £82.76 £78.62 £74.48 £70.35



Product Description

When methane and/or carbon monoxide are sensed the detector sounds an on board audible alarm and changes over a volt free contact relating to the type of gas sensed. These volt free relays can be used to isolate the electrical supply to gas solenoid valves or give a remote indication of an alarm. The alarm threshold for methane is 10% LEL and for carbon monoxide is 300ppm. The CHCO – Natural Gas & Carbon Monoxide Detector also has a separate carbon monoxide relay alarm facility which gives a relay output at 30-50-100ppm of carbon monoxide based on time weighted average function.


Product Details

  • Microprocessor control
  • Detects Carbon Monoxide and Natural Gas
  • 230V supply
  • Gas alarm relay SPDT
  • CO alarm relay SPDT
  • Catalytic sensor for gas
  • Electrochemical sensor for CO
  • Sensor active indicator
  • EN50194 for Gas and EN50291 for CO
  • 2 Year Warranty (Extendable to 3 years by registering this product online)


Onsite Diagnostics

If you require onsite diagnostics or technical assistance with any of our products please contact us

  • This field is for validation purposes and should be left unchanged.


We recommend Duomo Gas Detection products are serviced at least annually to ensure efficacy and extend sensor life. Our qualified team of engineers are available Nationwide.



  • Datasheet

    885.50 KB | pdf


Support & Service

If you require technical assistance or an annual service on this product please contact us and we will be happy to help. Our qualified team of engineers are available Nationwide.

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